Cita APA

Levi, P., Weaver, W., & Mazower, M. (2000). If not now, when? Penguin.

Citación estilo Chicago

Levi, Primo, William Weaver, y Mark Mazower. If Not Now, When? London: Penguin, 2000.

Cita MLA

Levi, Primo, et al. If Not Now, When? Penguin, 2000.